I have a problem since updating to Mavericks, whenever I download a file, even when it completes, the thumbnail doesn't show. The download progress icon remains. I have gone as far as deleting the finder plist, with no success.
Here is a screencap of my problem: http://i.imgur.com/ijOH3HL.png
Here is a screencap of my problem: http://i.imgur.com/ijOH3HL.png